{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["GENE"], "input": "The frequency of positive anti - GM1 antibody titers in the Guillain - Barre syndrome patients with PEN 19 isolates was higher than that in the Guillain - Barre syndrome and Fisher ' s syndrome patients without PEN 19 isolates ."}
{"GENE": ["anti - GM1 antibody"]}